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Connecting ServiceNow to a Certificate Based SMTP relay Exchange Connector

Tim Grindlay
Mega Sage

‎12-16-2025 07:56 PM - edited ‎12-17-2025 07:44 PM

When configuring a Certificate based SMTP relay connector in Exchange as per this article: How to set up a multifunction device or application to send email using Microsoft 365 or Office 365 ...

 

Is there any way to specify a certificate in the email accounts configuration settings in ServiceNow or are we limited to the IP address option for the connector?

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Pushpendra98
Giga Contributor

‎12-22-2025 06:55 AM

ServiceNow does not support client certificate configuration for outbound email. SMTP relay is limited to IP-based allow listing or basic authentication, so certificate-based handling must be done outside ServiceNow.

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Tim Grindlay
Mega Sage
In response to Pushpendra98

‎01-26-2026 02:11 PM

Hi, thanks for the response. This is basically the answer I received from ServiceNow as well. Do you have any documentation references or sources for the answer? 

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